ARLINGTON, TX - FEBRUARY 06: Singer Christina Aguilera sings the National Anthem during Super Bowl XLV between the Pittsburgh Steelers and the Green Bay Packers at Cowboys Stadium on February 6, 2011 in Arlington, Texas. (Photo by Jamie Squire/Getty Images)

GLENDALE, AZ - JANUARY 29: Ines Gomez Mont of TV Azteca is interviewed during New England Patriots media day for Super Bowl XLII at University of Phoenix Stadium on January 29, 2008 in Glendale, Arizona. (Photo by Scott Halleran/Getty Images)

PASADENA, CA - JANUARY 25: Quarterback Phil Simms #11 of the New York Giants drops back to pass against the Denver Broncos during Super Bowl XXI at the Rose Bowl on January 25, 1987 in Pasadena, California. The Giants defeated the Broncos 39-20. (Photo by George Rose/Getty Images)

25 Sep 1988: Running back Stanley Wilson of the Cincinnati Bengals runs with the ball during a game against the Cleveland Browns at Riverfront Stadium in Cincinnati, Ohio. The Bengals won the game, 24-17.

OAKLAND, CA - SEPTEMBER 8: Center Barret Robbins #63 of the Oakland Raiders walks on the field during the game against the Seattle Seahawks on September 8, 2002 at Network Associates Coliseum in Oakland, California. The Raiders won 31-17. (Photo By Scott Halleran/Getty Images)

Garo Yepremian, Miami Dolphins place kicker, watches as the ball heads toward the crossbar during a workout for the Super Bowl game with Minnesota Vikings in Houston, Jan. 9, 1974. The soccer-type kicker could mean the difference between winning and defeat for the Dolphins. (AP Photo)

Dallas Cowboys' head coach Tom Landry is given a victory ride on the shoulders of his players after the Cowboys defeated the Broncos 27-10 in Super Bowl XII at the New Orleans Louisiana Super Dome on Jan. 15, 1978. (AP Photo)

PHILADELPHIA, : Miami Dolphins head coach Don Shula gets carried of the field by his players 14 November 1993, in Philadelphia, PA, after beating the Philadelphia Eagles 19-14. The win was Shula's 325th in his career making him the winningest coach in National Football League history. (Photo credit should read JEFF HAYNES/AFP/Getty Images)

Dallas Cowboys strong side linebacker Thomas "Hollywood" Henderson pulls on a new pair of cowboy boots after practice on Wednesday, Jan. 11, 1979 in Dallas. Henderson who is never at a loss for words says he will use the new boots to kick the Pittsburg Steelers out of Super Bowl XIII. (AP Photo//Pete Leabo)

Pittsburgh Steelers wide receiver Lynn Swann goes up to make a ,catch over Dallas Cowboys cornerback Mark Washington in the Steelers 21-17 win over the Cowboys in Super Bowl X on January 18, 1976 at the Orange Bowl in Miami, Florida. (AP Photo/NFL Photos)

FILE - In this Jan. 18, 1981, file photo, Oakland Raiders 6-foot-8 defensive and John Matuszak flexes his muscles for a youngster after arriving at a New Orleans motel. After several years of relentlessly bad press, defensive tackle and certified party animal Matuszak issued an ultimatum: Anybody caught breaking curfew during the week would have to answer to him. (AP Photo/Brian Horton, File)

Baltimore Ravens linebacker Ray Lewis listens to the proceedings in Atlanta Municipal Court during his preliminary hearing Tuesday, Feb. 1, 2000, in Atlanta. Lewis, a Pro Bowl linebacker, is charged in the stabbing deaths of two people shortly after the Super Bowl. The hearing was postponed until Feb. 24. (AP Photo/Erik S. Lesser)

Dallas Cowboy running back Duane Thomas sits along on bleachers at the Cowboys training camp in New Orleans. Thomas refuses to pose for any pictures or interviews by sports writers. The Cowboys meet the Miami Dolphins in the Super Bowl. (AP Photo)

NEW ORLEANS, UNITED STATES: New England Patriots kicker Adam Vinatieri celebrates his game-winning field goal in the second half 03 February, 2002 of Super Bowl XXXVI in New Orleans, Louisiana. The Patriots defeated the St. Louis Rams 20-17 for the NFL championship. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

ATLANTA - JANUARY 30: Kevin Dyson #87 of the Tennessee Titans reaches for the end zone with the ball as Mike Jones #52 of the St. Louis Rams tackles him on the last play of the game during the Super Bowl XXXIV Game at the Georgia Dome on January 30, 2000 in Atlanta, Georgia. The Rams defeated the Titans 23-16. (Photo by: Tom Hauck /Getty Images)

San Francisco 49ers quarterback Joe Montana (16) and wide receiver John Taylor (82) clasp hands after Montana's pass to Taylor at the end of the fourth quarter resulted in a 20-16 victory over the Cincinnati Bengals at Super Bowl XXIII Jan.22, 1989 in Miami. (AP Photo/Rusty Kennedy)

CORAL CABLES, UNITED STATES: Atlanta Falcons defensive back Eugene Robinson stretches 25 January during his first practice for Super Bowl XXXIII at the University of Miami practice center in Coral Gables, Florida. The Falcons and Robinson, playing in his third straight Super Bowl, will take on the Denver Broncos in Super Bowl XXXIII 31 January. (ELECTRONIC IMAGE) AFP PHOTO/Jeff HAYNES (Photo credit should read JEFF HAYNES/AFP/Getty Images)

New York Giants Kevin Dockery (R) catches the ball during Super Bowl XLII against the New England Patriots at the University of Phoenix Stadium 03 February 2008 in Glendale, Arizona. The Giants won 17-14. AFP PHOTO/Gabriel BOUYS (Photo credit should read GABRIEL BOUYS/AFP/Getty Images)

HOUSTON, TX - FEBRUARY 1: Singers Janet Jackson and Justin Timberlake perform during the halftime show at Super Bowl XXXVIII between the New England Patriots and the Carolina Panthers at Reliant Stadium on February 1, 2004 in Houston, Texas. (Photo by Donald Miralle/Getty Images) The Patriots won 32-29 to claim their second Super Bowl in three years. (Photo by Donald Miralle/Getty Images)